[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f90OK0ACWfPnhJC5UIrYTui2P9iasgfpD31u4CPJXysY":3,"g5a-risk:CVE-2021-0270":224},{"success":4,"data":5,"meta":222},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":46,"epssPercentile":26,"epssTimeSeries":47,"severity":48,"affectedProducts":49,"affectedProductsCount":92,"references":93,"referencesCount":102,"weaknesses":103,"weaknessesCount":102,"isActivelyExploited":119,"cisaInfo":26,"otxData":26,"relatedBlogPosts":120,"seoMetadata":121,"configurations":146,"relatedVendorCves":220,"notableEvents":221},"CVE-2021-0270","What is CVE-2021-0270?","On PTX Series and QFX10k Series devices with the \"inline-jflow\" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel architecture of Juniper Networks Junos OS may allow an attacker to cause a Denial of Service (DoS) condition whereby one or more Flexible PIC Concentrators (FPCs) may restart. As this is a race condition situation this issue become more likely to be hit when network instability occurs, such as but not limited to BGP\u002FIGP reconvergences, and\u002For further likely to occur when more active \"traffic flows\" are occurring through the device. When this issue occurs, it will cause one or more FPCs to restart unexpectedly. During FPC restarts core files will be generated. While the core file is generated traffic will be disrupted. Sustained receipt of large traffic flows and reconvergence-like situations may sustain the Denial of Service (DoS) situation. This issue affects: Juniper Networks Junos OS: 18.1 version 18.1R2 and later versions prior to 18.1R3-S10 on PTX Series, QFX10K Series.","On PTX Series and QFX10k Series devices with the \"inline-jflow\" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel 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concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.\nA race condition violates these properties, which are closely related:\nA race condition exists when an \"interfering code sequence\" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single \"x++\" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).\nThe interfering code sequence could be \"trusted\" or \"untrusted.\" A trusted interfering code sequence occurs within the product; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable product.","Draft","Class","Simple",{"id":113,"name":114,"description":115,"extendedDescription":116,"status":117,"abstraction":118,"structure":111},"CWE-416","Use After Free","The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","","Stable","Variant",false,[],{"title":122,"metaDescription":123,"keywords":124,"canonicalUrl":125,"structuredData":126},"What is CVE-2021-0270? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-0270, a medium severity cyber security vulnerability from 2021. On PTX Series and QFX10k Series devices with the \"inline-j...","CVE-2021-0270, CVE-2021-0270 vulnerability, CVE-2021-0270 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, juniper security, junos vulnerability, ptx1000 vulnerability, ptx10001-36mr vulnerability, ptx10002 vulnerability, ptx10003 vulnerability","\u002Fwhat-is\u002Fcve-2021-0270",{"@context":127,"@type":128,"headline":122,"description":123,"datePublished":10,"dateModified":11,"author":129,"publisher":133,"about":137,"mainEntityOfPage":141,"articleSection":144,"keywords":145},"https:\u002F\u002Fschema.org","TechArticle",{"@type":130,"name":131,"url":132},"Organization","Precursor 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